Best Time to Fly DTW to GRB: On-Time Stats by Hour & Airline
Detroit Metro Wayne County → Green Bay Austin Straubel International
Data through July 2026 · Last updated October 18, 2026
875 flights were scheduled from Detroit (DTW) to Green Bay (GRB) in the last 12 months, and 72.4% of those that flew arrived on time, 5.3 points below the US average of 77.6%.
Among 2 airlines, SkyWest Airlines led with 73.6% on time and Delta Air Lines was last with 67.8%.
Over 24 months, Saturday was the most reliable day (80% on time) and December the worst month (59%).
The cancellation rate was 2.1% (US average 1.8%).
DTW to GRB on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 73.6% | 108 min | 2.2% | 689 |
| Delta Air Lines | 67.8% | 58 min | 1.6% | 186 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DTW to GRB
On-time arrival % by scheduled departure hour (local time), 1,691 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | Limited data | 23 | |
| 10am–11am | 81.2% | 1.8% | 511 |
| 12pm–1pm | Limited data | 20 | |
| 3pm–4pm | 66.3% | 1.2% | 84 |
| 4pm–5pm | 72.5% | 0.7% | 451 |
| 5pm–6pm | 76.7% | 0.0% | 30 |
| 6pm–7pm | Limited data | 1 | |
| 7pm–8pm | Limited data | 1 | |
| 8pm–9pm | 70.6% | 1.5% | 536 |
| 9pm–10pm | 70.6% | 0.0% | 34 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DTW to GRB
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 55.6% | -20.0 pts | 5.3% | 38 |
| Christmas & New Year (Dec 20 - Jan 3) | 61.2% | -14.3 pts | 4.3% | 70 |
| Summer peak (Jun 15 - Aug 15) | 74.6% | -1.0 pts | 0.0% | 173 |
| All other days | 75.5% | — | 1.2% | 1,410 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).